Adjustable wrench



Jan. 9, 1923.

1. H. PICKARD,

ADJUSTABLE WRENCH.

FILED APR. 5,1921.

Patented Jan. Q, 1%23.

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AnJosrABLn Wnnnon.

' Application filed April 5',

To all whom it may concern:

Be it known that 1, JOHN HENRY Florin-no,

a subject of the King of GreatBritain in which one edge of one of the limbs or.

' parts is provided with a plurality of notches,

sockets, or gaps,adapted to receive a hinge pin or plvot, and with any ofv which, said pin may be engaged by moving one limb or partlongitudina-lly in relation to the other, andthe object of the present invention is to provide a wrench of the kind referred to of improved construction;

According to this invention the edge of the shank of the slidable jaw is provided with open recesses to receive a pivot pin of non-circular formation in cross section, the arrangement being such that when said shank is turned at a certain angle relatively to the stationary jaw shank one of the recesses in the former can be passed into engagement with or disengaged from the pivot pin, but when said jaws and shanks are in the operativev position the conformation of the recesses and the pivot pin is such that the latter cannot be drawn out of the respective recess, a spring preferably being provided tending to turn the relatively moving shank into the operative position. In stead of moving the jaws and jaw shanks relatively to each in order to adjust the spanner the pivot pin may be mounted so as to be capable of a part rotary movement in order to turn the same into position in which the recess in the respective shank is free to engage or leave the same.

The invention. will bG'JIiOIQ particularly described by the aid of the accompanying drawings in which:

Fig. 1 is a part sectional view of an adjustable wrench constructed according to the invention.

Fig. 2 is a corresponding view showing the two parts turned into position in which they can be disengaged.

Fig. 3 is a sectional plan view on the line 3, 3, Fig. 1.

Fig. 4 is a view corresponding to Fig. 3,

1921. Serial No. 458,695;

but showing a pivot pin capable of being rotated.

Referring to the drawings, the main por tion a of the wrench is formed of-sheet metal which is shaped and bent up so that serrated ears I) are formed at one end, said ears being connected by a distance piece and constitutingone of the jaws. v

The body portion is trough shape'd,-as seen in Fig. 3, and receives the sliding' member, which'has a head portion (Z, the under side of which is serrated at e to coactqwith' the before mentioned serrated ears Z). Said serrated face is formed at an acute angle" to theextension or handle 0 and the serrations are continued for a short distance down the extension. The latter is formed with any desired number of depressions or recesses f to receive thepivot pin 9 which is riveted in position. The shape of the latter in cross-section is about two thirds of a circle and the recesses f are of similar conformation so that the distance between the flat side g of the pin 9 and the opposite rounded side of said pin is narrower than the width of the pin at right angles to the first measurement and equal to the width of the front opening f in the recesses f. In order that the greatest angle of movement may be obtained without any tendency of the sliding member to leave the pivot pin, the front opening f is formed at an angle, the underside of the recesses f extending further round the pivot pin than the top side as clearly seen in the drawings.

When the handles a and c are turned into the position shown in Fig. 2, it will be seen that the narrow way of the pivot pin is in line with the restricted opening f of the recess consequently the two parts can be readily separated and a different recess engaged for adjustment purposes. A spring 72. may be secured to the back part of the handie a as shown in Fig. l which tends to turn the handle 0 into the position in which the recesses engage the pin. and when in this position. while the two parts can be turned about one another they cannot be drawn apart owing to the width of the opening 7" being less than that of the pivot pin except across the flat 1.

Instead of the pivot 9 being fixed to the handle a it may be rotatably mounted as shown in Fig. 4. In this case the pin 9 is of the same sectional shape as the pivot pin 9 but one end is provided with a milled head 9 while the other end is screw-threaded to screw into the opposite side of the main portion (1 a spring washer Z: being interposed beneath the head 9- to retain the pin in the adjusted position. The arrangement is such that the pin is normally retained with the fiat in the position shown in Fig. 1, but saidpin can readily be turned into position where the arm a can be drawn clear without the necessity of moving said arm 0 into the position shown in F ig. 2. If desired the pin 9 may be riveted over to prevent the entire withdrawal of the same. By these means the wrench can be adjusted to suit objects of different sizes in a simple and expeditious manner, without loose parts.

1. In combination, in an adjustable wrench, two main parts each having a roughened part forming a jaw, and each also having a handle part, and one of said main parts being hollow and the other solid and extending through the hollow part, a pivot pin secured to the said hollow part and having a flat portion on one side, said solid main part having a series of recesses in one edge with anyone of which the pin may engage, the entrance to each recess being less than the widest diameter of the said pivot pin but slightly greater than the diainforming the other jaw of the wrench, a pivot pin riveted to the two walls of and ertending across the interior of the hollow part of the wrench and on that part inside the wrench provided with a fiat portion, said solid part of the wrench extending through the hollow part, and having recesses in one of its edges any one of whichmay only on gage or leave the pin when that part oi the pin of smallest diameter comes opposite the entrance of the recess, asset forth. In testimony whereof I have signed my name to this s ecifioation. 1 J HN HENRY PICKARD. Witnesses:

SYDNEY MCAW, N. HARRIS SETTLE. 

